Rivet holder and driver



March 22, 1932. A. R. HAVENER 1,850,670

RIVET HOLDER AND DRIVER Filed Aug. 7, 1930 2 Sheets-Sheet l I I" I I 6 I I I I /6 l0 5 I I 4 06 I I 39' I I ,',4'\I'I53 U I I A? I I I I l l 34 I an March 22, 1932; A. R. HAVENEFi RIVET HOLDER AND DRIVER Filed Aug. '7. 1930 2 Sheets-Sheet 2 [TeX/6771297 flrivuj 1Q. Hal/e716]? Patented Mar. .22, 1932 UNrr so STATES ARTHUR- R. 'HAVEHER, OF WAYLAND, -MASSACHUSETTS, ASSIGNOR TO JUDSQN' L. THOM- SON MANUFACTURING 60., F WAIITHAM, MASSACHUSETTS, A CORPDBATION QF' MASSACHUSETTS YRIVET, HOLDER. AND nnrvnn Application filed August 7, 1930. Serial No. 473,678.

This invention relates to. an improved riv- I The invention consists in the improvedv 1o rivet driver having a rivet holdergslidably bination and arrangement of parts set forth in the followingv specification and particularly pointed out in the'claims. Referring to 'the'drawings Fig. 1. is a front elevation of a portion of a riveting machine embodying ,my invention and illustrating particularly the rivetdrlver andholder. l

Fig. 2is a side elevation of the rivet dr1v er and holder, the same being partly broken away and shown in section. l

Fig. 3 is a sectionalplan taken on line 3-3 of Fig.2 illustrating the rivet holder.

Fig 4: is a front elevationbroken away illustrating the driver and holder, one half of the holder being removed.

' Fig. 5 is a bottom plan of the rivet driver lower end.

Fig. 6 is a side elevation of a rivet adapted to befed anddrivenby the driver and holder of thisinvention. V

Fig.7 is aleft hand side elevation of aportion of a riveting machine embodying. my invention and illustrating particularly the mechanism for imparting a reciprocatory motion to the slide to which the rivet driver .is fastened.

Like numerals referto likeparts throughout the several views of the drawings.

In the drawings 10 is the head ofthe rivet- I ing machine. 11 is a slide guided in ways 12 on the head 10. 13 is a rivet 'driver,the upper portionof which is preferably rectan gular in section and is positioned in a recess 14 in the slide 11 and clamped thereto by a late 15 and screws 16. Thelower portion of the rivet driver is curved inwardly on two opposite sides at 17 and terminates .at its lower end in two cylindrically formed portions18 which are joined together by a cross piece 19, the cylindrically formed portions 18 and the cross piece 19 beingpreferably integral and the cross piece 19.being of less thickness thanthe cylindricallyformed side portions 18, whereby a pair of oppositely disposed grooves 19 are provided one on each face of the driver extending longitudinally thereof and interposed between the cylindrically formed side portions 18 of said driver.

A rivet holder 20 is slidably mounted on the driver 13 and is, frictionally positioned there- 7 on, the holder consisting as a whole of two flat arms 21 which are oppositely disposed to each other, and upon the inner face of each of said arms respectively is fastened a plate 22by means of rivets 23. The plates 22 are recessed on their adjacent faces to form'a chamber 24 and the plates 22 arealso each provided with a pair of grooves 25 to receive the shanks of two rivets, the said grooves ter- Ininating at ,theirrupper ends in bevels 26 adapted to support theheads" of rivets27 as illustrated in dotted lines Fig. 1. The lower end of each of the plates 22 is provided with projections 28'. These projections are oppositely disposed and when the plates arein their normal positions abut against each other along a central plane 29, seeFigs. 2 and 3. The lower ends ofjthe grOQVes 25' are tapered at 30, and terminate in cylindrically formed portions 31; so that when the' rivjet is driven downwardly in the holder; as hereinafter described, by the driver, the shank'of the rivet will be forced through the cylindrically formed openings 31 to the work into which the rivet is t'ojbe drivenfand clinched.

Thearms 21 are slidably mounted on the driver13 iii-ways 32, the upper ends of these arms being bevelled at 33, see Fig. 2. The

arms 21 are frictionally positioned in the guideways 32 by yielding means comprising a pair of oppositely disposed flat springs 34 which are fastened by screws 35 to the driver 13 and spaced therefrom by a plate 36, the lower ends of the flat springs 34 being bevelled at 37, so that there is provided between the inner face of each of the springs 34 and the driver 13 a space 38, and the arms 21 are slidably mounted in this space 38 between the bottom of the guideway 32 and the inner face of the spring 34, the sides of the arms 21 being guided by the side faces of the guideway 32. The upper edges of the arms 21 are bevelled at 33 and the lower edges of the springs 34 are bevelled at 37 so as to aid in guiding the arms 21 into the guideways 32 and thus the holder plates 22 with their arms 21 may be readily removed from or attached to the driver 13, the upper ends of the arms 21 being preferably arcuate in shape as illustrated at 39, Fig. 1. The springs 34 press against the arms 21 so as to hold them frictionally positioned in their respective guideways.

In the operation of the machine the rivets are'clinched against an anvil 40. The rivets are fed into the chamber 24 and on opposite sides thereof simultaneously by raceways 41, the rivets passing from the raceways into the position illustrated in dotted lines, for one of said rivets, in Fig. 4. The lower end portions 42 of the raceways 41 constitute stops against which shoulders 43 on the plates 22 abut when the driver and holder move upwardly, thus bringing the holder to a stop while the driver proceeds further upwardly as illustrated in Fig. 1, the shanks passing through a space 44 between the two adjacent faces 44 of the plates and entering the chamber 24 where the head of the rivet rests upon the ridges 26 and the shank of the rivet projects downwardly into the chamber 24 and into the grooves 25 in the adjacent faces of the plates 22.

When the rivets 27 pass from the raceways 41 into the chamber 24 and into the position illustrated in dotted lines in Fig. 4, they will be prevented from moving any nearer to each other by relatively elevated and oppositely disposed portions 45 of the plates 22, see Fig. 3. When the rivets 27 are positioned in the holder between the plates 22, as hereinbefore described, it will be understood that the cylindrically formed portions 18 of the driver are in alignment with said rive-ts and also with the anvil 40. The distance between portions 45 of the plates 22 is less than between the faces 44 and less than the rivet shank diam eter.

The head 10 forms a portion of a frame 47 and a reciprocatory motion is imparted to the slide 11 by a pair of links 48 and 49 pivotally connected to each other by a pin 50 fast to a crank rod 51. The link 49 is pivoted at its upper end to a pin 52 fast to the head of the machine, and the link 48 is pivoted to a pin 53 fast to the slide 11. The rear end of the crank rod 51 is pivotally mounted upon a crank pin 54, which is fastened to a gear 55 and is eccentric thereto. The gear 55 is fast to a shaft 56 rotatably'mounted in bearings 57 on a bracket 58 fast to the frame 47. The gear 55 is rotated by a pinion 59 fast to a shaft 60 rotatably mounted in bearmgs 61 on the bracket 58. The shaft 60 is rotated by means of a pulley 62 fast thereto. As the gear 55 rotates, the crank pin 54 revolves with it and imparts a reciprocatory motion to the crank rod 51 and thus through the links 49 and 48 a reciprocatory motion is imparted to the slide 11, the driver 13 and the rivet holder 20.

The general operation of the mechanism hereinbefore described is as follows :-Rivets are fed down the raceways 41 and into the chamber 24 between the plates 22 of the rivet holder, so that two of these rivets are fed to the holder simultaneously and are positioned therein as shown in dotted lines, Fig. 4.

Assuming the parts of the machine to be in the relative positions illustrated in Fig. 1, there are at this time two rivets positioned in the holder, and the material 46 into which rivets are to be clinched is positioned on the anvil 40 by the operator, as shown in dotted lines in Fig. l. The operator now starts the machine to impart a downward movement to the slide 11, driver 13 and rivet holder carried by said driver, a reciprocatory movement being given to the driver and to the holder carried thereby by mechanism hereinbefore described and illustrated in F ig. 7. WVhen the driver moves downwardly, it will carry with it the holder and the rivets positioned therein until the lower faces of the plates '22 engage the material 46, which at that time is resting on the anvil 40. The holder will then come to a stop, the driver will continue its downward movement, and the arms 21'of the holder will slide in their respective guideways 32 until the rivets are driven out of the holder by the driver and through the material 46 and clinched therein, whereupon the driver will move upwardly carrying with it the arms 21 and plates22 constituting the holder by reason of the friction between the said arms 21 and the driver until the shoulders 43 on the plates 22 engage the stops 42 formed by the lower ends of the raceways 41, whereupon the rivet holder will stop and the driver will continue its upward movement for a sufficient distance to allow the next to the lowermost rivets positioned on the lower ends of the raceways to enter the chamber 24 in the holder, whereupon the operation hereinbefore described is repeated.

I claim:

1. A tool for driving rivets having, in combination, a rivet driver, a pair of arms bination, a rivet driver, a pair of arms slidably disposed on opposite sides of said driver,

a pair of oppositely disposed plates fast to said arms and adapted to hold a plurality of rivets between them, and yielding means adapted to press said arms against said driver, whereby said arms may be frictionally retained on said driver.

3. A tool for driving rivets having, in combination, a rivet driver, a pair of arms slidably disposed on opposite sides of said driver, a pair of oppositely disposed plates fast to said arms and adapted to hold a rivet between them, and a pair of flat springs fast to said driver and bearing against said arms whereby the arms are frictionally retained on the driver.

4. A tool for driving rivets having, in combination, a rivet driver, a pair of arms slid: ably disposed on opposite sides of said driver, a pair of oppositely disposed plates fast to said arms and adapted to hold a rivet between them, and a pair of fiat springs fast to said 7 driver and bearing against said arms whereby the arms are frictionally retained on the driver, the upper edges of said arms being bevelled.

5. A rivet holder having, in combination, a rivet driver, a pair of arms slidably disposed on opposite sides of said rivet driver, and a pair of oppositely disposed plates, one fast to each of said arms respectively, said plates being recessed to form a chamber therebetween and the adjacent faces of said plates each being provided with grooves to receive the shanks of two rivets, said plates being bevelled at the upper ends of said grooves and adapted to support the heads of said rivets,

the distance between the plates intermediate said grooves being less than the distance be tween the plates outside said grooves at the entrances to said chamber.

6. A rivet holder having, in combination, a rivet driver, a pair of arms slidably disposed on opposite sides of said rivet driver, and a pair of oppositely disposed plates, one fast, to each of said arms respectively, said plates being recessed to form a chamber therebetween and the adjacent faces of said plates each being provided with grooves to receive the shanks of two rivets, said plates being bevelled at the upper ends of said grooves and adapted to support the heads of said rivets, the distance between the plates intermediate said grooves being less than the diameter of the shank of the rivet to be driven.

7. Atool for driving rivets having, in combination, a rivet driver, a pair of arms slidably disposed on opposite sides of said driver,

a pair of oppositely disposed platesfast to said arms and adapted to hold a rivet-between them, and a pair of flatsprings fast to said driver and bearing against said arms whereby the arms are frictionally retainedon the. driver, the lower edges of said springs being bevelled. Y

8. A tool for simultaneously driving a plurality of rivets having, in combination, a rivet driver,and a rivet holder slidably mounted on saiddriver and adapted tosimultaneously hold a plurality of rivets spaced apart and in alignment with said driver.

9. A tool for simultaneously driving a plurality of rivets having, in combination, a rivet driver, a rivet holder slidably mounted on said driver and adapted to simultaneously hold a plurality of rivets spaced apart and in alignment with said driver, and means to frictionally retain said rivet holder on said driven,

10. A rivet holder having, in combination,

a rivet driver, a pair of arms disposed on opposite sides of said driver, a pair of oppositely disposed plates, one fast to eachof said arms respectively, said plates being recessed to form a chamber therebetween and the adjacent faces of said plates each being provided with grooves to receive the shanks of two rivets,said plates being beveled at the upper ends of said grooves and adapted to support'the heads of said rivets.

11. A riveting machine having, in combination, a slide, a rivet driver fast thereto, a rivet holder slidably moimted on said rivet driver, an anvil in alignment with said driver,

mechanism to impart a reoiprocatory motion to said slide toward and away from said anvil, whereby said rivet holder will also be moved toward and away from said anvil, means to frictionally retain the holder in the rivet driver, and raceways constituting stops adapted to limit the distance to which said holder may be moved away from the anvil.

12. A riveting machine having, in combination, a slide, a rivet driver fast thereto, a rivet holder slidably mounted on said driver and provided with a chamber adapted to simultaneously receive and position a pair of rivets therein, a pair of raceways arranged and constructed to simultaneously deliver rivets to said chamber, an anvil in alignment with said driver, and mechanism to impart a away from said anvil.

13. A riveting machine having, in combination, a slide, a rivet driver fast thereto, a rivet holder slidably and frictionally retained on said driver and provided with a chamber adapted to simultaneously receive and position a pair of rivets therein, a pair of raceways arranged and constructed to simultaneously deliver two rivets to said chamber, an

, reciprocatory motion to said slide toward and anvil in alignment with said driver, mechanism to impart a reciprocatory motion to said slide toward and away from said anvil, said raceways constituting stops adapted to limit the distance to which said holder can be moved away from said anvil.

14. A riveting machine having, in combination, a slide, a rivet driver fast thereto, a rivet holder slidably mounted on said driver and provided with a chamber adapted to receive and position a pair of rivets therein, a pair of raceways arranged and constructed to deliver rivets to said chamber, an anvil in alignment with said driver, and mechanism to impart a reciprocatory motion to said slide toward and away from said anvil.

15. A riveting machine having, in combination, a slide, a rivet driver fast thereto, a rivet holder slidably and frictionally posim tioned on said driver and provided with a chamber adapted to receive and position a pair of rivets therein, a pair of raceways arranged and constructed to deliver rivets to said chamber, an anvil in alignment with u said driver, mechanism to impart a reciprocatory motion to said slide toward and away from said anvil, said raceways constituting stops adapted to limit the distance to which said holder can be moved away from said go anvil.

In testimony whereof I have hereunto set my hand.

ARTHUR H. HAVENER. 

